/*!
 * Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
 * Dual-licensed under the BSD or MIT licenses
 */
;(function ($, window, document, undefined) {
    var hasTouch = 'ontouchstart' in document;
    var nestableCopy;

    /**
     * Detect CSS pointer-events property
     * events are normally disabled on the dragging element to avoid conflicts
     * https://github.com/ausi/Feature-detection-technique-for-pointer-events/blob/master/modernizr-pointerevents.js
     */
    var hasPointerEvents = (function () {
        var el = document.createElement('div'),
            docEl = document.documentElement;
        if (!('pointerEvents' in el.style)) {
            return false;
        }
        el.style.pointerEvents = 'auto';
        el.style.pointerEvents = 'x';
        docEl.appendChild(el);
        var supports = window.getComputedStyle && window.getComputedStyle(el, '').pointerEvents === 'auto';
        docEl.removeChild(el);
        return !!supports;
    })();

    var defaults = {
        listNodeName: 'ol',
        itemNodeName: 'li',
        rootClass: 'dd',
        listClass: 'dd-list',
        itemClass: 'dd-item',
        dragClass: 'dd-dragel',
        handleClass: 'dd-handle',
        collapsedClass: 'dd-collapsed',
        placeClass: 'dd-placeholder',
        noDragClass: 'dd-nodrag',
        emptyClass: 'dd-empty',
        expandBtnHTML: '<button data-action="expand" type="button">Expand</button>',
        collapseBtnHTML: '<button data-action="collapse" type="button">Collapse</button>',
        group: 3,
        maxDepth: 5,
        threshold: 20,
        reject: [],
        data: []
    };

    function Plugin(element, options) {
        this.w = $(document);
        this.el = $(element);
        this.options = $.extend({}, defaults, options);
        this.init();
    }

    Plugin.prototype = {

        //遍历获取最大的ID
        getId: function () {
            var list = this;

            var arr = $(list.el).find("li").map(function () {
                return $(this).attr("data-id");
            });
            arr.sort(function sortNumber(a, b) {
                return b - a;
            })

            return Number(arr[0]) + 1;
        },

        addNextGroup: function (id, depth) {
            var _this = this;


            var param = new Object();
            param.pId = id;
            param.depth = depth;
            _this.addGroup(param);


        },

        delGroup: function (li) {
            $("li[data-id='" + li.attr("data-id") + "']").remove()
        },

        loadGroup: function (param) {
            this.addGroup(param);
        },

        addGroup: function (param) {
            var _this = this;
            var li = $("<li>");
            var title = "新建分组";
            var depth, pId;
            var mainNode;

            if (param) {
                if (param.group) {
                    title = param.group;
                    id = param.id;
                    if (param.pId == 0) {
                        mainNode = _this.el;
                    } else {
                        mainNode = $("li[data-id='" + param.pId + "']");
                    }
                } else {
                    id = _this.getId();
                    mainNode = $("li[data-id='" + param.pId + "']");

                }
                depth = param.depth;
            } else {
                id = _this.getId();
                depth = 1;
                mainNode = _this.el;

            }


            li.attr("data-id", id).attr("class", "dd-item");

            var editTitle = $("<a>").attr("class", "editTitle title").append(title);

            // //编辑框弹出来时禁止拉动
            // editTitle.editable().on('shown', function (e, editable) {
            //     editTitle.parent().find(".editable-container").on('mousedown', function (e) {
            //         e.stopPropagation();
            //     });
            // });


            //点击文字时禁止拉动
            editTitle.on('mousedown', function (e) {
                e.stopPropagation();
            });
            var div = $("<div>").attr("class", "dd-handle").append(editTitle);
            var buttons = $("<div>").attr("class", "pull-right action-buttons")


            if (depth != 2) {
                var addBtn = $("<a>").attr("class", "blue").attr("href", "#")
                    .append($("<li>").attr("class", "pull-right bigger-130 ace-icon fa  fa-plus"));
                addBtn.on('mousedown', function (e) {
                    e.stopPropagation();
                });
                buttons.append(
                    addBtn
                )
                depth++;
                addBtn.click(function () {
                    _this.addNextGroup(param.id, depth);


                })
            } else {
                depth++
            }

            li.attr("data-depth", depth)


            if (depth == 2) {
                li.addClass("item-orange");
            } else if (depth == 1) {
                li.addClass("item-blue");

            } else if (depth == 3) {
                li.addClass("item-red");

            }

            var delBtn = $("<a>").attr("class", "blue").attr("href", "#").append($("<li>").attr("class", "pull-right bigger-130 ace-icon fa red  fa-trash-o"));


            delBtn.on('mousedown', function (e) {
                e.stopPropagation();
            });

            delBtn.click(function () {
                _this.delGroup(li)
            })

            buttons.append(
                delBtn
            )

            div.append(buttons);
            li.append(div);


            //如果ol不存在，则创建一个

            if (mainNode.children("ol").length == 0) {
                var ol = $("<ol>").attr("class", "dd-list");
                mainNode.append(ol);

            }

            mainNode.children("ol").append(li)

            if (!param) {
                _this.reinit();

            }


        },
        reinit: function () {
            // alias
            var list = this;

            // remove expand/collapse controls
            $.each(this.el.find(this.options.itemNodeName), function (k, el) {
                // if has <ol> child - remove previously prepended buttons
                if ($(el).children(list.options.listNodeName).length) {
                    $(el).children('button').remove();
                }
            });

            // remove delegated event handlers
            list.el.off('click', 'button');

            var hasTouch = 'ontouchstart' in document;
            if (hasTouch) {
                list.el.off('touchstart');
                list.w.off('touchmove');
                list.w.off('touchend');
                list.w.off('touchcancel');
            }

            list.el.off('mousedown');
            list.w.off('mousemove');
            list.w.off('mouseup');

            // call init again
            list.init(true);
        },

        initData: function () {
            var _this = this;
            var data = this.options.data;
            $(data).each(function (index, item) {
                var pId = item.id;
                item.depth = 0;
                item.pId = 0;
                _this.loadGroup(item)
                if (item.params) {
                    //二层遍历
                    $(item.params).each(function (index, item) {
                        item.depth = 1;
                        item.pId = pId;
                        var pId2 = item.id;
                        _this.loadGroup(item);
                        if (item.params) {
                            //三层遍历
                            $(item.params).each(function (index, item) {
                                item.depth = 2;
                                item.pId = pId2;


                                _this.loadGroup(item);
                            })
                        }


                    })
                }

            });


        },
        reinitEvent: function (isInit) {

            if (isInit) {
                $(".editTitle").editable("destroy");
            }
            this.el.find(".editTitle").each(function (index, obj) {
                $(obj).editable().on('shown', function (e, editable) {
                    $(obj).parent().find(".editable-container").on('mousedown', function (e) {
                        e.stopPropagation();
                    });
                });
            })


        },

        init: function (isInit) {
            var list = this;

            if (!isInit) {
                list.initData()
                list.reinitEvent(true)
            }
            list.reset();

            list.el.data('nestable-group', this.options.group);

            list.placeEl = $('<div class="' + list.options.placeClass + '"/>');

            $.each(this.el.find(list.options.itemNodeName), function (k, el) {
                list.setParent($(el));
            });

            list.el.on('click', 'button', function (e) {
                if (list.dragEl) {
                    return;
                }
                var target = $(e.currentTarget),
                    action = target.data('action'),
                    item = target.parent(list.options.itemNodeName);
                if (action === 'collapse') {
                    list.collapseItem(item);
                }
                if (action === 'expand') {
                    list.expandItem(item);
                }
            });

            var onStartEvent = function (e) {
                $(".editTitle").editable('destroy');

                var handle = $(e.target);

                list.nestableCopy = handle.closest('.' + list.options.rootClass).clone(true);

                if (!handle.hasClass(list.options.handleClass)) {
                    if (handle.closest('.' + list.options.noDragClass).length) {
                        return;
                    }
                    handle = handle.closest('.' + list.options.handleClass);
                }

                if (!handle.length || list.dragEl) {
                    return;
                }

                list.isTouch = /^touch/.test(e.type);
                if (list.isTouch && e.touches.length !== 1) {
                    return;
                }

                e.preventDefault();
                list.dragStart(e.touches ? e.touches[0] : e);
            };

            var onMoveEvent = function (e) {
                if (list.dragEl) {
                    e.preventDefault();
                    list.dragMove(e.touches ? e.touches[0] : e);
                }
            };

            var onEndEvent = function (e) {

                if (list.dragEl) {
                    e.preventDefault();
                    list.dragStop(e.touches ? e.touches[0] : e);
                }

                list.reinitEvent(false);

            };

            if (hasTouch) {
                list.el[0].addEventListener('touchstart', onStartEvent, false);
                window.addEventListener('touchmove', onMoveEvent, false);
                window.addEventListener('touchend', onEndEvent, false);
                window.addEventListener('touchcancel', onEndEvent, false);
            }

            list.el.on('mousedown', onStartEvent);
            list.w.on('mousemove', onMoveEvent);
            list.w.on('mouseup', onEndEvent);

            //  $('[data-rel="tooltip"]').tooltip();

        },


        serialize: function () {
            var data,
                depth = 0,
                list = this;
            step = function (level, depth) {
                var array = [],
                    items = level.children(list.options.itemNodeName);
                items.each(function () {

                    var title = $(this).find(".title").html();
                    var id = $(this).attr("data-id");
                    var li = $(this),
                        item = new Object(),
                        sub = li.children(list.options.listNodeName);
                    item.group = title;
                    item.id = id;
                    if (sub.length) {
                        item.children = step(sub, depth + 1);
                    }
                    array.push(item);
                });
                return array;
            };
            data = step(list.el.find(list.options.listNodeName).first(), depth);
            return data;
        },

        serialise: function () {
            return this.serialize();
        },

        reset: function () {
            this.mouse = {
                offsetX: 0,
                offsetY: 0,
                startX: 0,
                startY: 0,
                lastX: 0,
                lastY: 0,
                nowX: 0,
                nowY: 0,
                distX: 0,
                distY: 0,
                dirAx: 0,
                dirX: 0,
                dirY: 0,
                lastDirX: 0,
                lastDirY: 0,
                distAxX: 0,
                distAxY: 0
            };
            this.isTouch = false;
            this.moving = false;
            this.dragEl = null;
            this.dragRootEl = null;
            this.dragDepth = 0;
            this.hasNewRoot = false;
            this.pointEl = null;
        },

        expandItem: function (li) {
            li.removeClass(this.options.collapsedClass);
            li.children('[data-action="expand"]').hide();
            li.children('[data-action="collapse"]').show();
            li.children(this.options.listNodeName).show();
        },

        collapseItem: function (li) {
            var lists = li.children(this.options.listNodeName);
            if (lists.length) {
                li.addClass(this.options.collapsedClass);
                li.children('[data-action="collapse"]').hide();
                li.children('[data-action="expand"]').show();
                li.children(this.options.listNodeName).hide();
            }
        },

        expandAll: function () {
            var list = this;
            list.el.find(list.options.itemNodeName).each(function () {
                list.expandItem($(this));
            });
        },

        collapseAll: function () {
            var list = this;
            list.el.find(list.options.itemNodeName).each(function () {
                list.collapseItem($(this));
            });
        },

        setParent: function (li) {
            if (li.children(this.options.listNodeName).length) {
                li.prepend($(this.options.expandBtnHTML));
                li.prepend($(this.options.collapseBtnHTML));
            }
            li.children('[data-action="expand"]').hide();
        },

        unsetParent: function (li) {
            li.removeClass(this.options.collapsedClass);
            li.children('[data-action]').remove();
            li.children(this.options.listNodeName).remove();
        },

        dragStart: function (e) {

            var mouse = this.mouse,
                target = $(e.target),
                dragItem = target.closest(this.options.itemNodeName);

            this.placeEl.css('height', dragItem.height());

            mouse.offsetX = e.offsetX !== undefined ? e.offsetX : e.pageX - target.offset().left;
            mouse.offsetY = e.offsetY !== undefined ? e.offsetY : e.pageY - target.offset().top;
            mouse.startX = mouse.lastX = e.pageX;
            mouse.startY = mouse.lastY = e.pageY;

            this.dragRootEl = this.el;

            this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass);
            this.dragEl.css('width', dragItem.width());

            dragItem.after(this.placeEl);
            dragItem[0].parentNode.removeChild(dragItem[0]);
            dragItem.appendTo(this.dragEl);

            $(document.body).append(this.dragEl);
            this.dragEl.css({
                'left': e.pageX - mouse.offsetX,
                'top': e.pageY - mouse.offsetY
            });
            // total depth of dragging item
            var i, depth,
                items = this.dragEl.find(this.options.itemNodeName);
            for (i = 0; i < items.length; i++) {
                depth = $(items[i]).parents(this.options.listNodeName).length;
                if (depth > this.dragDepth) {
                    this.dragDepth = depth;
                }
            }
        },

        dragStop: function (e) {
            var el = this.dragEl.children(this.options.itemNodeName).first();
            el[0].parentNode.removeChild(el[0]);
            this.placeEl.replaceWith(el);

            var i;
            var isRejected = false;
            for (i in this.options.reject) {
                var reject = this.options.reject[i];
                if (reject.rule.apply(this.dragRootEl, el)) {
                    var nestableDragEl = el.clone(true);
                    this.dragRootEl.html(this.nestableCopy.children().clone(true));
                    if (reject.action) {
                        reject.action.apply(this.dragRootEl, [nestableDragEl]);
                    }

                    isRejected = true;
                    break;
                }
            }

            if (!isRejected) {
                this.el.trigger('change');
                if (this.hasNewRoot) {
                    this.dragRootEl.trigger('change');
                }
            }
            this.dragEl.remove();
            this.reset();


        },

        dragMove: function (e) {
            var list, parent, prev, next, depth,
                opt = this.options,
                mouse = this.mouse;

            this.dragEl.css({
                'left': e.pageX - mouse.offsetX,
                'top': e.pageY - mouse.offsetY
            });

            // mouse position last events
            mouse.lastX = mouse.nowX;
            mouse.lastY = mouse.nowY;
            // mouse position this events
            mouse.nowX = e.pageX;
            mouse.nowY = e.pageY;
            // distance mouse moved between events
            mouse.distX = mouse.nowX - mouse.lastX;
            mouse.distY = mouse.nowY - mouse.lastY;
            // direction mouse was moving
            mouse.lastDirX = mouse.dirX;
            mouse.lastDirY = mouse.dirY;
            // direction mouse is now moving (on both axis)
            mouse.dirX = mouse.distX === 0 ? 0 : mouse.distX > 0 ? 1 : -1;
            mouse.dirY = mouse.distY === 0 ? 0 : mouse.distY > 0 ? 1 : -1;
            // axis mouse is now moving on
            var newAx = Math.abs(mouse.distX) > Math.abs(mouse.distY) ? 1 : 0;

            // do nothing on first move
            if (!mouse.moving) {
                mouse.dirAx = newAx;
                mouse.moving = true;
                return;
            }

            // calc distance moved on this axis (and direction)
            if (mouse.dirAx !== newAx) {
                mouse.distAxX = 0;
                mouse.distAxY = 0;
            } else {
                mouse.distAxX += Math.abs(mouse.distX);
                if (mouse.dirX !== 0 && mouse.dirX !== mouse.lastDirX) {
                    mouse.distAxX = 0;
                }
                mouse.distAxY += Math.abs(mouse.distY);
                if (mouse.dirY !== 0 && mouse.dirY !== mouse.lastDirY) {
                    mouse.distAxY = 0;
                }
            }
            mouse.dirAx = newAx;

            /**
             * move horizontal
             */
            if (mouse.dirAx && mouse.distAxX >= opt.threshold) {
                // reset move distance on x-axis for new phase
                mouse.distAxX = 0;
                prev = this.placeEl.prev(opt.itemNodeName);
                // increase horizontal level if previous sibling exists and is not collapsed
                if (mouse.distX > 0 && prev.length && !prev.hasClass(opt.collapsedClass)) {
                    // cannot increase level when item above is collapsed
                    list = prev.find(opt.listNodeName).last();
                    // check if depth limit has reached
                    depth = this.placeEl.parents(opt.listNodeName).length;
                    if (depth + this.dragDepth <= opt.maxDepth) {
                        // create new sub-level if one doesn't exist
                        if (!list.length) {
                            list = $('<' + opt.listNodeName + '/>').addClass(opt.listClass);
                            list.append(this.placeEl);
                            prev.append(list);
                            this.setParent(prev);
                        } else {
                            // else append to next level up
                            list = prev.children(opt.listNodeName).last();
                            list.append(this.placeEl);
                        }
                    }
                }
                // decrease horizontal level
                if (mouse.distX < 0) {
                    // we can't decrease a level if an item preceeds the current one
                    next = this.placeEl.next(opt.itemNodeName);
                    if (!next.length) {
                        parent = this.placeEl.parent();
                        this.placeEl.closest(opt.itemNodeName).after(this.placeEl);
                        if (!parent.children().length) {
                            this.unsetParent(parent.parent());
                        }
                    }
                }
            }

            var isEmpty = false;

            // find list item under cursor
            if (!hasPointerEvents) {
                this.dragEl[0].style.visibility = 'hidden';
            }
            this.pointEl = $(document.elementFromPoint(e.pageX - document.body.scrollLeft, e.pageY - (window.pageYOffset || document.documentElement.scrollTop)));
            if (!hasPointerEvents) {
                this.dragEl[0].style.visibility = 'visible';
            }
            if (this.pointEl.hasClass(opt.handleClass)) {
                this.pointEl = this.pointEl.parent(opt.itemNodeName);
            }
            if (this.pointEl.hasClass(opt.emptyClass)) {
                isEmpty = true;
            }
            else if (!this.pointEl.length || !this.pointEl.hasClass(opt.itemClass)) {
                return;
            }

            // find parent list of item under cursor
            var pointElRoot = this.pointEl.closest('.' + opt.rootClass),
                isNewRoot = this.dragRootEl.data('nestable-id') !== pointElRoot.data('nestable-id');

            /**
             * move vertical
             */
            if (!mouse.dirAx || isNewRoot || isEmpty) {
                // check if groups match if dragging over new root
                if (isNewRoot && opt.group !== pointElRoot.data('nestable-group')) {
                    return;
                }
                // check depth limit
                depth = this.dragDepth - 1 + this.pointEl.parents(opt.listNodeName).length;
                if (depth > opt.maxDepth) {
                    return;
                }
                var before = e.pageY < (this.pointEl.offset().top + this.pointEl.height() / 2);
                parent = this.placeEl.parent();
                // if empty create new list to replace empty placeholder
                if (isEmpty) {
                    list = $(document.createElement(opt.listNodeName)).addClass(opt.listClass);
                    list.append(this.placeEl);
                    this.pointEl.replaceWith(list);
                }
                else if (before) {
                    this.pointEl.before(this.placeEl);
                }
                else {
                    this.pointEl.after(this.placeEl);
                }
                if (!parent.children().length) {
                    this.unsetParent(parent.parent());
                }
                if (!this.dragRootEl.find(opt.itemNodeName).length) {
                    this.dragRootEl.append('<div class="' + opt.emptyClass + '"/>');
                }
                // parent root list has changed
                if (isNewRoot) {
                    this.dragRootEl = pointElRoot;
                    this.hasNewRoot = this.el[0] !== this.dragRootEl[0];
                }
            }
        }

    };
    // $.fn.nestable = function (params) {
    //     var lists = this,
    //         retval = this;
    //
    //     lists.each(function () {
    //         var plugin = $(this).data("nestable");
    //
    //         if (!plugin) {
    //             $(this).data("nestable", new Plugin(this, params));
    //             $(this).data("nestable-id", new Date().getTime());
    //         } else {
    //             if (typeof params === 'string' && typeof plugin[params] === 'function') {
    //                 retval = plugin[params]();
    //             }
    //         }
    //     });
    //
    //     return retval || lists;
    // };

    $.fn.nestable = function (params) {
        var lists = this,
            retval = this;

        lists.each(function () {

            var plugin = $(this).data("nestable");
            if (!plugin) {
                $(this).data("nestable", new Plugin(this, params));
                $(this).data("nestable-id", new Date().getTime());
            } else if (params == "addGroup1") {
                retval = plugin[params].apply(this, Array.prototype.slice.call(arguments, 1));

            } else {
                if (typeof params === 'string' && typeof plugin[params] === 'function') {
                    retval = plugin[params]();
                }
            }
        });

        return retval || lists;

    };

})(window.jQuery || window.Zepto, window, document);